Vharuvhu yekuwedzera kupisa, chubhu ye capillary, vharuvhu yekuwedzera yemagetsi, zvishandiso zvitatu zvakakosha zvekudzora
Nzira yekudhonza mvura (throttling mechanism) ndeimwe yezvinhu zvakakosha mumudziyo wekutonhodza. Basa rayo nderekuderedza mvura yakasviba (kana mvura yakatonhodzwa) pasi pekumanikidzwa kwekudhonza mvura mucondenser kana liquid receiver kusvika pakumanikidzwa kwekubuda kwemvura uye tembiricha yekubuda kwemvura mushure mekudhonza mvura. Zvichienderana nekuchinja kwemutoro, kufamba kwefiriji inopinda mu evaporator kunogadziriswa. Midziyo yekudhonza mvura inowanzo shandiswa inosanganisira machubhu e capillary, mavharuvhu ekuwedzera ekupisa, uye mavharuvhu anoyangarara.
Kana huwandu hwemvura inopihwa nechinhu chinodhonza mvura kuchinhu chinobuda mvura hwakanyanya kukwira kana tichienzanisa nemutoro wechinhu chinobuda mvura, chikamu chemvura inotonhorera chinopinda mucompressor pamwe chete nechinhu chinotonhorera chine gasi, zvichikonzera tsaona yekumanikidzwa kwemvura kana tsaona yehammer yemvura.
Kusiyana neizvi, kana huwandu hwemvura hushoma zvichienzaniswa nehuremu hwekupisa hwemuchina wekupwanya mvura, chikamu chenzvimbo yekutsinhana kwekupisa yemuchina wekupwanya mvura hachizokwanisi kushanda zvizere, uye kunyangwe kumanikidzwa kwemvura kuchaderedzwa; uye kugona kutonhora kwemuchina kuchaderedzwa, chiyero chekutonhodza chichaderedzwa, uye tembiricha yekuburitsa mvura muchina wekupwanya mvura inokwira, izvo zvinokanganisa kunyoroveswa kwemuchina wekupwanya mvura.
Kana mvura inotonhorera ichipfuura nepaburi diki, chikamu chesimba rinotenderera chinoshandurwa kuita simba rinotenderera, uye mwero wekuyerera unowedzera zvakanyanya, zvichiita kuti mvura ifambe zvisina kugadzikana, simba rekukweshana riwedzere, uye simba rinotenderera rinoderera, kuitira kuti mvura ikwanise kuzadzisa chinangwa chekuderedza simba uye kudzora kufamba kwayo.
Kupinza mhepo mumhepo (throttling) ndeimwe yenzira ina huru dzinoshandiswa pakuita kuti mhepo itonhore.
Maitiro ekukweva ane mabasa maviri:
Imwe ndeyekudzikisa nekudzikamisa firiji ine simba guru inobuda mu condenser ichienda ku evaporation pressure.
Chechipiri ndechekugadzirisa huwandu hwemvura inotonhorera inopinda mu evaporator zvichienderana nekuchinja kwemutoro wesystem.
1. Vharuvhu yekuwedzera kupisa
Vharuvhu yekuwedzera kupisa inoshandiswa zvakanyanya muFreon refrigerant system. Kuburikidza nebasa rekuona tembiricha, inoshanduka yega nekuchinja kwetembiricha yerefrigerant panobuda evaporator kuti iwane chinangwa chekugadzirisa huwandu hwemvura inopihwa murefrigerant.
Mavharuvhu mazhinji ekuwedzera kupisa ane kupisa kwakanyanya pa5 kusvika 6°C asati abuda mufekitori. Maumbirwo evharuvhu anoita kuti kana kupisa kwakanyanya kwawedzerwa neimwe 2°C, vharuvhu inenge yavhurika zvizere. Kana kupisa kwakanyanya kwasvika 2°C, vharuvhu yekuwedzera inovharwa. Chitubu chekugadzirisa kudzora kupisa kwakanyanya, huwandu hwekugadzirisa i3～6℃.
Kazhinji, kana vharuvhu yekuwedzera kupisa yakanyanya kukwira, simba remuchina wekudziya kupisa rinodzikira, nekuti kuwedzera simba remuchina wekudziya kupisa kunobata chikamu chikuru chenzvimbo yekupisa iri pamuswe wemuchina wekudziya, kuitira kuti mutsi wakazara upiswe zvakanyanya pano. Unobata chikamu chenzvimbo yekupisa yemuchina wekudziya, kuitira kuti nzvimbo yekupisa mufiriji uye kunyudzwa kwekupisa kuderedzwa, kureva kuti, pamusoro pemuchina wekudziya kupisa haushandiswe zvizere.
Zvisinei, kana mwero wekupisa kwakanyanya wakaderera, mvura inotonhorera inogona kuunzwa mucompressor, zvichikonzera kusafara kwenyundo yemvura. Saka, kudzora kupisa kwakanyanya kunofanirwa kuve kwakakodzera kuona kuti firiji yakakwana inopinda mu evaporator uku uchidzivirira mvura inotonhorera kuti isapinde mucompressor.
Vharuvhu yekuwedzera kupisa inonyanya kuumbwa nemuviri wevharuvhu, package yekuona tembiricha uye chubhu ye capillary. Kune mhando mbiri dzevharuvhu yekuwedzera kupisa: rudzi rwemukati rwechiyero uye rudzi rwekunze rwechiyero zvichienderana nenzira dzakasiyana dzekuenzanisa diaphragm.
Vharuvhu yekuwedzera yekupisa yakaenzana mukati
Vharuvhu yekuwedzera kupisa yakaenzana mukati inoumbwa nemuviri wevharuvhu, tsvimbo yekusundidzira, chigaro chevharuvhu, tsono yevharuvhu, chitubu, tsvimbo inodzora, girobhu rinonzwa tembiricha, chubhu inobatanidza, diaphragm yekunzwa nezvimwe zvinhu.
Vharuvhu yekuwedzera yekupisa yakaenzana nekunze
Musiyano uripo pakati pevharuvhu yekuwedzera thermal yemhando yekunze uye rudzi rwemukati rwechiyero muchimiro nekuisa ndewekuti nzvimbo iri pasi pevharuvhu yekunze yechiyero haina kubatana nevharuvhu inobuda, asi pombi diki yechiyero inoshandiswa kubatanidza ne evaporator outlet. Nenzira iyi, kumanikidzwa kwefiriji kunoshanda pasi pe diaphragm hakusi Po panopinda evaporator mushure mekupwanya, asi kumanikidzwa Pc panopinda evaporator. Kana simba re diaphragm rakaenzana, iPg=Pc+Pw. Dhigirii rekuvhura kwevharuvhu harikanganisirwi nekuramba kwekuyerera mu evaporator coil, nokudaro richikunda zvikanganiso zve internal balance type. External balance type inonyanya kushandiswa panguva apo evaporator coil resistance yakakura.
Kazhinji, dhigirii rekupisa kwemhepo (steam superheat degree) kana vharuvhu yekuwedzeredza yavharwa inonzi dhigirii rekupisa kwemhepo rakavharika, uye dhigirii rekupisa kwemhepo rakavharika rakaenzanawo nedhigirii rekupisa kwemhepo rakavhurika kana gomba revharuvhu ratanga kuvhurika. Kupisa kwemhepo kwekuvhara kwakabatana nekuiswa kwemvura muchitubu, uko kunogona kugadziriswa nechinhu chinogadzirisa.
Kupisa kwakanyanya kana chitubu chagadziriswa panzvimbo yakareruka kunonzi minimum closed superheat; asi, kupisa kwakanyanya kana chitubu chagadziriswa kune yakasimba kunonzi maximum closed superheat. Kazhinji, minimum closed superheat degree ye expansion valve haisi kupfuura 2℃, uye maximum closed superheat degree haisi pasi pe8℃.
Pavharuvhu yekuwedzera kupisa yemukati, kumanikidzwa kwemvura inobuda mumhepo kunoshanda pasi pe diaphragm. Kana kudzvinyirirwa kwemuchina we evaporator kwakakura, pachava nekurasikirwa kukuru kwekudzivirira kuyerera kwemvura kana muchina we refrigerant uchiyerera mune mamwe ma evaporator, izvo zvinokanganisa zvakanyanya vharuvhu yekuwedzera kupisa. Kushanda kwemuchina we evaporator kunowedzera, zvichikonzera kuwedzera kwekupisa kwakanyanya panzvimbo inobuda muchina we evaporator, uye kushandiswa zvisina kufanira kwenzvimbo ye heat transfer yemuchina we evaporator.
Kune mavharuvhu ekuwedzera ekupisa akaenzana nekunze, kumanikidzwa kunoshanda pasi pe diaphragm ndiko kumanikidzwa kwekubuda kwemuchina we evaporator, kwete kumanikidzwa kwekubuda kwe evaporation, uye mamiriro acho anovandudzika.
2. Mutsinga weropa
Kapilari ndiyo nzira iri nyore yekudhonza. Kapilari ichubhu yemhangura yakatetepa ine urefu hwakatarwa, uye dhayamita yayo yemukati inowanzova 0.5 kusvika 2 mm.
Zvinhu zve capillary semudziyo wekukweva
(1) Kapillary inotorwa kubva muchubhu yemhangura tsvuku, iyo iri nyore kugadzira uye yakachipa;
(2) Hapana zvikamu zvinofamba, uye hazvisi nyore kukonzera kukundikana nekubuda kwemvura;
(3) Ine hunhu hwekuzvitsiva,
(4) Kana compressor yekutonhodza yamira kushanda, kumanikidzwa kuri kudivi rine kumanikidzwa kwakanyanya uye kumanikidzwa kuri kudivi rine kumanikidzwa kwakaderera mufiriji system zvinogona kuenzaniswa nekukurumidza. Painotanga kushanda zvakare, mota ye compressor yekutonhodza inotanga kushanda.
3. Vharuvhu yekuwedzera yemagetsi
Vharuvhu yekuwedzera yemagetsi imhando yekumhanya, iyo inoshandiswa mu inverter air conditioner inodzorwa nehungwaru. Zvakanakira zvevharuvhu yekuwedzera yemagetsi ndeizvi: nzvimbo yakakura yekugadzirisa kuyerera; kurongeka kwakanyanya; yakakodzera kudzora kwakangwara; yakakodzera kuchinja nekukurumidza mukuyerera kwefiriji inoshanda zvakanyanya.
Mabhenefiti eMavharuvhu Ekuwedzera Emagetsi
Rudzi rukuru rwekugadzirisa kuyerera;
Kunyatso gadzirisa zvinhu;
Yakakodzera kutonga kwakangwara;
Inogona kushandiswa pakuchinja nekukurumidza kwemvura inotonhorera uye inoshanda zvakanyanya.
Kuvhurwa kwevharuvhu yekuwedzera yemagetsi kunogona kugadziriswa kuti kuenderane nekumhanya kwecompressor, kuitira kuti huwandu hwerefrigerant inounzwa necompressor huenderane nehuwandu hwemvura inounzwa nevharuvhu, kuitira kuti kugona kwemuchina wekupwanya mvura kuwedzere uye kuti pave nekudzora kwakakodzera kwemhepo inotonhodza uye system yekutonhodza mvura zviwanikwe.
Kushandiswa kwevharuvhu yekuwedzera yemagetsi kunogona kuvandudza kushanda zvakanaka kwesimba remuchina we inverter, kugadzirisa tembiricha nekukurumidza, uye kuvandudza chiyero chekushanda zvakanaka kwesimba remwaka wesystem. Kune ma air conditioner ane simba guru e inverter, mavharuvhu ekuwedzera emagetsi anofanira kushandiswa sezvinhu zvinodzora simba.
Maumbirwo evharuvhu yekuwedzera yemagetsi ane zvikamu zvitatu: kuona, kudzora uye kuita. Zvichienderana nenzira yekutyaira, inogona kukamurwa kuva mhando yemagetsi uye mhando yemagetsi. Mhando yemagetsi inokamurwazve kuva mhando yekushanda zvakananga uye mhando yekudzikisa. Mota yekukwira ine tsono yevharuvhu imhando yekushanda zvakananga, uye mota yekukwira ine tsono yevharuvhu inopfuura negear set reducer imhando yekudzikisa.
Nguva yekutumira: Mbudzi-25-2022
